314の問題の最後の方で、なぜ tanθ{ π-(θ1-θ2)} が -tan(θ1-θ2) になるのかがわからないです！！教えてください！！

* Z。 が鋭角で, tanc = 2 線| 12 g が > tan2=3 の 8 さき 放しも 々2の こき, tn(o+の を計算す 硬 niesms 皿 ロ313 2直線 ッー ー3々十1。ッー2十3 のなす角りを求めょ。 ただし。 区 0363今 とする。 暗> (rm ッーー語2 アニァト1 のなす角を 9 とするとき, tanのの 茹 pl95ms のM 何を求めよ。ただし, 0 <のる坊 とする。 品_B _』 310,311 315 次の式を位単にせよ。 の an講和9 W w(+和)+san(6-割-加 9 (なる)ow(9-全mm 時mmは)am(6- 双 5

(2)の和訳お願いします

Q① Tdont hike being told ⑫) was ashamed of having lied (3) denies having done anything Wrong ④ was angry at having been ignored

括弧内が解ける方、いましたらよろしくお願いします…！ 3) 政治家は高い倫理基準に縛られる必要がある。 Politicians need to be ( )( ) high ethical standards. 4) 何カ月も勉強したけれども、その学生は試験にぎり... Read More

この問題の解説お願いします🙇‍♂️ 答えは21-②,22-⑥,23-③,24-①,25-④です。

Japan is one of the countries facing the most significant population decrease。 In 2014, the ountry's population was just under 127 milion people, but by 2040 the population is expected to fl to around 107 milion一and by 2050 the population will probably be undcr 100 milion. IMoreover the prOPortion of the Japanese population that is 65 years or lder is around 25%6 todey。 Tn contrast that percentage was only 796 in 1970. This high percentage of clderly people has eatcd fnancial problems for Japan。 Im particular。 it is difiicult for the country to pay for the Pensions and medical care ofretred people So what cmn Japan do to deal with this iuation? One obyious idea tiat many people have Tpoedis | 2 | the workng ageinJapan。 Uptonow people in Japanhawe usually sopped yoHding around the age of 65. TE people Would reire gt 70 instead, this would increase the oring population so that there would be more people to support the elderly and retired. Anoher benefit of people working longer is that by being active at work these older workers can stay healthy and also maintain their connection to societ- AS the populaton gts CHder in Japan。 companies are responding by | 23 | producs for cldedy consumers。 Some products may help Japan cope with is aging population. One example is the development ofrobot pets。 More and more clderly people are lonely becanse they are ving alone But aldng ce of a real pet can be diHicut for them。 | 24 | witharobotpetisome ay for eldcrly people to feel less lonely. Thcre are lso robots that can assist with nursing care。 Robot suits are also beimg developed that make it easier for a person to move or iR heavy objects Pan will need such technologies。 as well as policy changes。 it hopes to respond secssstulyto is | 25 | populaton. (Michael Schaucre・Tom Dilon・Koji Nshiya 4crive 7かgag Regdog の iii7g 人7owg 757opics 一部改変) ⑩ interactng @ becoming @ manufacturing @ simkng @ fcmg @ gaendig

四角で囲ったところが、「電源」と訳されているのだと思うのですが... 辞書で調べてもどのようにして、電源と訳されたのかが分かりません... 回答よろしくお願いします

recent technolo NASA, and high cost of ri av impro manufacturing the devices. “On the other hand vements and 且 了衣ee a larse investment in them by auto companieS ons,、have led to rapi MA Ta 0 pid falls in the manufacturing cost. 北 1S nOW eXDeCte0 fael cells wil h iaVe Dracdcal ai applications forl producing powerlin Our daily lves within next feW years.

in them と by の繋がりがよくわかりません。 by だけでも、意味が通ると思うのですが... 回答よろしくお願いします。

隔人 "Unfortunate jy,由 1 e main problem with developing fuetl cells for carSs high co St of manufacturing the devices. “On ImDrove ments and a large investment OrganiZations - 。 have led to rapid falls in the manufacturing CoSt fue】 ces wi h 。 ave practical applications for producing DOWeT in our daily hve EE in them and tne Pone BS DE the other nand, recent technological (by) auto cornDanieS, NASA, and otner STt 1S nOW expected mat s withmn the

最初の2枚の文章を読んで、 3枚目の空欄を埋めるんですが全く分かりません。 教えて欲しいです。

二ノ TS 3 The firat food bank etarted in the U.S 、 In Japan, we 。iarted our activities m 0 became an NPO called Second Harvest 0 March 2002。 Our Dam comes from the 9 <harvesting gurphus food. We not only Ve food to people who ne put we also help companies save money. In 2010 we "harvested" over 500 million yen worth of | フーレク活動の仕組み 7

⑧から⑩までってどういう話なのかわかりません！ 教えてください🙇‍♂️

much longer、⑧The fact is thatin the twentieth century the automobil。 was subsidized' on amassive scale.⑨The nicely pavedroads tnatso to R 3 1 the tiniest little towns in the United SYates weren t built and maintainea py automobile makers 一or even by oil companies・ ⑯ Those corporaton。 penefited enormously from (あ)that system.*⑪Railroutes to smalltowns

英検2級のwritingです。 Q. Some people say that Japanese companies should make their workers take English lessons. Do you agree with this idea? ... Read More

教えてください！

」 紀 57 ハッカーを四止するために. 企業や政府は。 データが読みとれなくなるコンピュータの[中 号化ンフト」 を使わなければならない。 の 0 He Tn order to stop hackers. でompanies and government must use computer *encryption ( DE( (0 46 8 ) ( DS 際 大) 「①やto @makes @read のimpossible data which ] (日本: